ISO 5663:1984Published

Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with selenium

Qualité de l'eau — Dosage de l'azote Kjeldahl — Méthode après minéralisation au sélénium

A new edition is under development: ISO/AWI 5663.

Abstract / scope

Specifies a procedure for the determination of trivalent negative nitrogen. Organic nitrogen in the form of azide, azine, azo, hydrazone, nitrite, nitro, nitroso, oxime or semicarbazone is not determined quantitatively. The procedure is applicable to the analysis of raw, potable and waste waters.

Life cycle

Replaced by

ISO/AWI 5663Under developmentWater quality — Determination of Kjeldahl nitrogen — Method after mineralization with a metal catalystInternational Standard · ISO/TC 147/SC 2